For those who might wish to defend the complexity-of-value thesis, what reasons do you have for thinking that human value is complex?

Humans have in their brains a lot of information about what morality is and is not, and it'd be silly to throw away all that information, especially considering that some of the simple underlying laws of morality might very well have some degree of context-sensitivity. Fundamental valuing of original contexts is one of the reasons I see that an FAI might bother to upload and run some humans or transhumans for a few septillions of years instead of only computing variations of convergent completely moral angelic computations instead.